Product Description
1/2" UNC Grade 5 zinc plated steel hex head set screws, fully threaded for general engineering, automotive, machinery, fabrication and maintenance applications. These high tensile imperial coarse thread fasteners are manufactured from steel with a zinc plated finish for general corrosion resistance.
The hexagon head allows installation with a standard spanner or socket, while the fully threaded shank is suitable where the thread needs to run close to the underside of the head. These 1/2" UNC set screws have a 13 TPI Unified National Coarse thread and are available in imperial lengths from 3/4" to 3".
For imperial UNC products, the suitable standard references are ASME B18.2.1 for hex head dimensions, ASME B1.1 for the UNC thread form, and SAE Grade 5 for the high tensile strength grade.
- 1/2" UNC hex head set screws
- Fully threaded
- Grade 5 / 8.8 high tensile steel
- Zinc plated finish
- 13 TPI UNC coarse thread
- Lengths from 3/4" to 3"
- Available in small and bulk pack sizes
Also known as UNC set screws, imperial hex set screws, fully threaded hex bolts, Grade 5 UNC bolts and zinc plated UNC hex screws.

| A | B | C | D | E |
| 1/2" | 1 1/2" | 3/4" | 5/16" | 13 |
| 1/2" | 1 1/4" | 3/4" | 5/16" | 13 |
| 1/2" | 1 3/4" | 3/4" | 5/16" | 13 |
| 1/2" | 1" | 3/4" | 5/16" | 13 |
| 1/2" | 2 1/2" | 3/4" | 5/16" | 13 |
| 1/2" | 2" | 3/4" | 5/16" | 13 |
| 1/2" | 3" | 3/4" | 5/16" | 13 |
| 1/2" | 3/4" | 3/4" | 5/16" | 13 |
Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first.